474 lines
15 KiB
Plaintext
474 lines
15 KiB
Plaintext
*nvim-cmp* *cmp*
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A completion plugin for neovim coded in Lua.
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==============================================================================
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CONTENTS *cmp-contents*
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Abstract |cmp-abstract|
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Concept |cmp-concept|
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Usage |cmp-usage|
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Function |cmp-function|
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Mapping |cmp-mapping|
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Command |cmp-command|
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Highlight |cmp-highlight|
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Autocmd |cmp-autocmd|
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Config |cmp-config|
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FAQ |cmp-faq|
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==============================================================================
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Abstract *cmp-abstract*
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This is nvim-cmp's document.
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1. The `cmp` object that appears in this docs is the return value of `require('cmp')`.
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==============================================================================
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Concept *cmp-concept*
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- Full support for LSP completion related capabilities
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- Powerful customizability via Lua functions
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- Smart handling of key mapping
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==============================================================================
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Usage *cmp-usage*
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The recommendation configurations are the below.
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NOTE:
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1. You must setup `snippet.expand` function.
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2. The `cmp.setup.cmdline` won't work if you specified the `experimental.native_menu` option.
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3. You can disable the `default` options via specifying `cmp.config.disable` value.
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>
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call plug#begin(s:plug_dir)
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Plug 'neovim/nvim-lspconfig'
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Plug 'hrsh7th/cmp-nvim-lsp'
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Plug 'hrsh7th/cmp-buffer'
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Plug 'hrsh7th/cmp-path'
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Plug 'hrsh7th/cmp-cmdline'
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Plug 'hrsh7th/nvim-cmp'
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" For vsnip users.
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Plug 'hrsh7th/cmp-vsnip'
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Plug 'hrsh7th/vim-vsnip'
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" For luasnip users.
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" Plug 'L3MON4D3/LuaSnip'
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" Plug 'saadparwaiz1/cmp_luasnip'
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" For snippy users.
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" Plug 'dcampos/nvim-snippy'
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" Plug 'dcampos/cmp-snippy'
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" For ultisnips users.
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" Plug 'SirVer/ultisnips'
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" Plug 'quangnguyen30192/cmp-nvim-ultisnips'
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call plug#end()
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set completeopt=menu,menuone,noselect
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lua <<EOF
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local cmp = require'cmp'
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-- Global setup.
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cmp.setup({
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snippet = {
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expand = function(args)
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vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
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-- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
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-- require'snippy'.expand_snippet(args.body) -- For `snippy` users.
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-- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
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end,
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},
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mapping = {
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['<C-d>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
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['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
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['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
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['<C-e>'] = cmp.mapping({
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i = cmp.mapping.abort(),
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c = cmp.mapping.close(),
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}),
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['<CR>'] = cmp.mapping.confirm({ select = true }),
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},
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sources = cmp.config.sources({
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{ name = 'nvim_lsp' },
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{ name = 'vsnip' }, -- For vsnip users.
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-- { name = 'luasnip' }, -- For luasnip users.
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-- { name = 'snippy' }, -- For snippy users.
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-- { name = 'ultisnips' }, -- For ultisnips users.
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}, {
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{ name = 'buffer' },
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})
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})
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-- `/` cmdline setup.
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cmp.setup.cmdline('/', {
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sources = {
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{ name = 'buffer' }
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}
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})
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-- `:` cmdline setup.
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cmp.setup.cmdline(':', {
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sources = cmp.config.sources({
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{ name = 'path' }
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}, {
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{ name = 'cmdline' }
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})
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})
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-- Setup lspconfig.
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local capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())
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require('lspconfig')[%YOUR_LSP_SERVER%].setup {
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capabilities = capabilities
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}
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EOF
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<
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==============================================================================
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Function *cmp-function*
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NOTE: You can call these functions in mapping via `<Cmd>require('cmp').complete()<CR>`.
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*cmp.setup* (config: cmp.ConfigSchema)
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Setup global configuration. See configuration option.
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*cmp.setup.buffer* (config: cmp.ConfigSchema)
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Setup buffer configuration to the current buffer.
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*cmp.setup.cmdline* (cmdtype: string, config: cmp.ConfigSchema)
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Setup cmdline configuration to the specific cmdtype.
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See |getcmetype()|
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NOTE: nvim-cmp does not support the `=` cmdtype.
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*cmp.visible* ()
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Return the completion menu is visible or not.
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*cmp.get_selected_entry* ()
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Return current selected entry. (contains preselected)
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*cmp.get_active_entry* ()
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Return current selected entry. (without preselected)
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*cmp.close* ()
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Just close the completion menu.
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*cmp.abort* ()
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Closes the completion menu and restore the current line to the state when it was started current completion.
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*cmp.select_next_item* (option: { behavior = cmp.SelectBehavior })
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Select next item.
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*cmp.select_prev_item* (option: { behavior = cmp.SelectBehavior })*
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Select prev item.
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*cmp.scroll_docs* (delta: number)
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Scroll docs if it visible.
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*cmp.complete* (option: { reason = cmp.ContextReason })
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Invoke manual completion.
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*cmp.confirm* (option: cmp.ConfirmOption)
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Confirm current selected completion item.
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*cmp.event:on* ('%EVENT_NAME%, callback)
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Subscribe nvim-cmp's events below.
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- `confirm_done`: emit after confirmation is done.
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==============================================================================
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Mapping *cmp-mapping*
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The nvim-cmp's mapping mechanism is complex but flexible and user-friendly.
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You can specify the mapping as function that receives the `fallback` function as arguments.
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The `fallback` function can be used to call an existing mapping.
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For example, typical pair-wise plugins automatically defines a mapping for `<CR>` or `(`.
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The nvim-cmp will overwrite it but you can fallback to the original mapping via invoking the `fallback` function.
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>
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cmp.setup {
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mapping = {
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['<CR>'] = function(fallback)
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if cmp.visible() then
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cmp.confirm()
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else
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fallback() -- If you are using vim-endwise, this fallback function will be behaive as the vim-endwise.
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end
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end
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}
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}
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<
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And you can specify the mapping modes.
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>
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cmp.setup {
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mapping = {
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['<CR>'] = cmp.mapping(your_mapping_function, { 'i', 'c' })
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}
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}
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<
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And you can specify the different mapping function for each modes.
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>
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cmp.setup {
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mapping = {
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['<CR>'] = cmp.mapping({
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i = your_mapping_function_a,
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c = your_mapping_function_b,
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})
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}
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}
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<
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You can also use built-in mapping helpers.
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*cmp.mapping.close* ()
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Close the completion menu.
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*cmp.mapping.abort* ()
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Closes the completion menu and restore the current line to the state when completion was started.
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*cmp.mapping.select_next_item* (option: { behavior = cmp.SelectBehavior })
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Select the next completion item. (NOTE: This function can be used with omni completion menu)
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*cmp.mapping.select_prev_item* (option: { behavior = cmp.SelectBehavior })
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Select the prev completion item. (NOTE: This function can be used with omni completion menu)
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*cmp.mapping.scroll_docs* (delta: number)
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Scroll the documentation window if it's visible.
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*cmp.mapping.complete* (option: { reason = cmp.ContextReason })
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Invoke completion.
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*cmp.mapping.confirm* (option: cmp.ConfirmOption)
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Accept current selected completion item.
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If you didn't select any items and specified the `{ select = true }`,
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nvim-cmp will automatically select the first item.
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>
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cmp.setup {
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mapping = {
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['<CR>'] = cmp.mapping.confirm({ select = true })
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}
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}
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<
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The built-in mapping helper is only available as a configuration option.
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If you want to call the nvim-cmp features directly, please use |cmp-function| instead.
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==============================================================================
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Command *cmp-command*
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*CmpStatus*
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Prints source statuses for the current buffer and states.
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Sometimes `unknown` source will be printed but it isn't problem. (e.g. `cmp-nvim-lsp`)
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That the reason is the `cmp-nvim-lsp` will registered on the InsertEnter autocmd.
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==============================================================================
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Highlight *cmp-highlight*
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*CmpItemAbbr*
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The abbr field's highlight group.
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*CmpItemAbbrDeprecated*
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The abbr field's highlight group that only used for deprecated item.
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*CmpItemAbbrMatch*
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The matched character's highlight group.
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*CmpItemAbbrMatchFuzzy*
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The fuzzy matched character's highlight group.
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*CmpItemKind*
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The kind field's highlight group.
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*CmpItemKind%KIND_NAME%*
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The kind field's highlight group for specific `lsp.CompletionItemKind`.
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If you want to overwrite only the method kind's highlight group, you can do this.
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>
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highlight CmpItemKindMethod guibg=NONE guifg=Orange
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<
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*CmpItemMenu*
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The menu field's highlight group.
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==============================================================================
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Autocmd *cmp-autocmd*
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*cmp#ready*
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Invoke after sourcing the `plugin/cmp.lua`
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==============================================================================
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Config *cmp-config*
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You can specify the following configuration option via `cmp.setup { ... }` call.
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*cmp-config.enabled*
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enabled~
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`boolean | fun(): boolean`
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You can control nvim-cmp should work or not via this option.
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*cmp-config.snippet.expand*
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preselect~
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`cmp.PreselectMode`
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1. `cmp.PreselectMode.Item`
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nvim-cmp will pre-select the item that the source specified.
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2. `cmp.PreselectMode.None`
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nvim-cmp wouldn't pre-select any item.
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*cmp-config.mapping*
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mapping~
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`table<string, fun(fallback: function)`
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See |cmp-mapping| section.
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*cmp-config.snippet.expand*
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snippet.expand~
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`fun(option: cmp.SnippetExpansionParams)`
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The snippet expansion function. You must integrate your snippet engine plugin via this.
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*cmp-config.completion.keyword_length*
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completion.keyword_length~
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`number`
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The default number value to trigger auto-completion.
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*cmp-config.completion.keyword_pattern*
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completion.keyword_pattern~
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`string`
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The default keyword pattern.
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*cmp-config.completion.autocomplete*
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completion.autocomplete~
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`cmp.TriggerEvent[] | false`
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The auto-completion trigger events. If you specify this value to false, the
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nvim-cmp does not completion automatically but you can still use the manual
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completion though.
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*cmp-config.formatting.format*
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formatting.format~
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`fun(entry: cmp.Entry, vim_item: vim.CompletedItem): vim.CompletedItem`
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The function to customize the completion menu appearance. See |complete-items|.
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*cmp-config.formatting.fields*
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formatting.fields~
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`cmp.ItemField[]`
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The array of completion menu field to specify the order of them.
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*cmp-config.sorting.priority_weight*
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sorting.priority_weight~
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`number`
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Specifically, each item's original priority (given by its corresponding source) will be
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increased by `#sources - (source_index - 1)` multiplied by `priority_weight`.
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That is, the final priority is calculated by the following formula:
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>
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final_score = orig_score + ((#sources - (source_index - 1)) * sorting.priority_weight)
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<
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*cmp-config.sorting.comparators*
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sorting.comparators~
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`(fun(entry1: cmp.Entry, entry2: cmp.Entry): boolean | nil)[]`
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The function to customize the sorting behavior.
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You can use built-in comparators via `cmp.config.compare.*`.
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*cmp-config.formatting.fields*
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formatting.fields~
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`cmp.ItemField[]`
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The array of completion menu field to specify the order of them.
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*cmp-config.sources*
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sources~
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`cmp.SourceConfig[]`
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Array of the source configuration to use.
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The order will be used to the completion menu's sort order.
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*cmp-config.sources[n].name*
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sources[n].name~
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`string`
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The source name.
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*cmp-config.sources[n].option*
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sources[n].option~
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`table`
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The source specific custom option that defined by the source.
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*cmp-config.sources[n].keyword_length*
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sources[n].keyword_length~
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`number`
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The source specific keyword length to trigger auto completion.
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*cmp-config.sources[n].keyword_pattern*
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sources[n].keyword_pattern~
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`number`
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The source specific keyword pattern.
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*cmp-config.sources[n].trigger_characters*
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sources[n].trigger_characters~
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`string[]`
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The source specific keyword pattern.
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*cmp-config.sources[n].priority*
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sources[n].priority~
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`number`
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The source specific priority value.
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*cmp-config.sources[n].max_item_count*
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sources[n].max_item_count~
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`number`
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The source specific item count.
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*cmp-config.sources[n].group_index*
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sources[n].group_index~
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`number`
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The source group index.
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For example, You can specify the `buffer` source group index to bigger number
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if you don't want to see the buffer source items when the nvim-lsp source is available.
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>
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cmp.setup {
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sources = {
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{ name = 'nvim_lsp', group_index = 1 },
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{ name = 'buffer', group_index = 2 },
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}
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}
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<
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You can specify this via the built-in configuration helper like this.
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>
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cmp.setup {
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sources = cmp.config.sources({
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{ name = 'nvim_lsp' },
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}, {
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{ name = 'buffer' },
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})
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}
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<
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*cmp-config.experimental.ghost_text*
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experimental.ghost_text~
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`boolean | { hl_group = string }`
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The boolean value to enable or disable the ghost_text feature.
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*cmp-config.experimental.native_menu*
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experimental.native_menu~
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`boolean`
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The boolean value to enable or disable the native completion menu.
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==============================================================================
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FAQ *cmp-faq*
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==============================================================================
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vim:tw=78:ts=4:et:ft=help:norl:
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